7/17/2019 absttract

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Dynamic Trust Management for Delay

Tolerant Networks and Its Application

to Secure RoutingABSTRACT

Delay tolerant networks (DTNs) are characterized by high end-to-end latency,

frequent disconnection, and opportunistic communication oer unreliable wireless links!

"n this paper, we design and alidate a dynamic trust management protocol for secure

routing optimization in DTN enironments in the presence of well-behaed, selfish and

malicious nodes! #e deelop a noel model-based methodology for the analysis of our 

trust protocol and alidate it ia e$tensie simulation! %oreoer, we address dynamic

trust management, i!e!, determining and applying the best operational settings at runtime

in response to dynamically changing network conditions to minimize trust bias and to

ma$imize the routing application performance! #e perform a comparatie analysis of our 

 proposed routing protocol against &ayesian trust-based and non-trust based (''*+T

and epidemic) routing protocols! The results demonstrate that our protocol is able to deal

with selfish behaiors and is resilient against trust-related attacks! urthermore, our trust-

 based routing protocol can effectiely trade off message oerhead and message delay for 

a significant gain in deliery ratio! ur trust-based routing protocol operating under 

identified best settings outperforms &ayesian trust-based routing and ''*+T, and

approaches the ideal performance of epidemic routing in deliery ratio and message delay

without incurring high message or protocol maintenance oerhead!